We know not everyone is an enthusiast and when the time comes a lot of people are just looking for a replacement unit that will work. Without going into the many merits of Antec power supplies, how do you pick out a compatible replacement unit?

Disclaimer: Brand name computers (Dell, HP, Compaq, etc....) often use proprietary parts and connectors. If you have one of these computers we strongly encourage you to consult the manufacturer before purchasing a replacement power supply.

1. Find out what kind of power supply you're replacing.

The majority of desktop computers utilize ATX power supplies. The easiest way to figure out if you have an ATX power supply is to do a quick Google search for the unit's model number - most manufacturers and retailers will state explicitly on the power supply's webpage whether or not it follows ATX specification. 

Aside from looking up the specs for the model you have, there are also three characteristics you can use to help determine if it is an ATX Unit:

i) The unit's dimensions are typically 150MM (W) x 86MM (H) x 140MM (L). (Some ATX units will have a greater length, but width and height must be 86MM x150MM)

ii) The mounting holes are spaced as such (dimensions in millimeters):

iii)   The plug for the AC input cord and the wire harness should be on opposite sides.

If your power supply does not appear to be an ATX unit or you are still unsure, please start a support ticket and we can investigate the matter further. If your unit is a standard ATX unit proceed on.

2. Determine how many watts your current unit is.

The wattage of your power supply should be listed on a sticker on the unit. More often than not it can be found within or just below the DC output table.

3. Determine what connectors you need.

This step is somewhat optional, if you have a basic work station or something similar just about any ATX power supply should have all the connectors you need to get going. If your machine is a little fancier, you may want to determine which connectors you need and how many of each of them. Connector information for the unit should be available on the manufacturer or retailer's product page. If there isn't a product page for the power supply you're replacing you can use our Power Supply Connector Guide to help identify the connectors on your unit and determine what you need..

With this information in hand you've got all the information you should need to find a compatible replacement. You should purchase an ATX power supply with the same or greater wattage than your previous power supply. As stated in (1i), the length dimension may vary beyond the typical 140MM, to be on the safe side we recommend making sure the length of the replacement unit is not greater than the length of the old unit. Lastly depending on your system you may want to make sure the replacement has all the connectors that you are currently using. You can check out our Power Supply Comparison Chart to help determine which of our power supplies have what you're looking for.

As always if you have any doubts or questions about picking out a replacement, please start a support ticket and we can address your needs specifically.